Bard Oil Furnace FLF085D36F - Manual (Page 14)

Manual 2100-422N
Page
14 of 42
PRIMARY OPERATIONAL GUIDE
BECKETT GENISYS 7505
Sequence of Operation
MIS-2491
BECKETT GENISYS
MODEL 7505
BURNER STATES
1. Standby: The burner is idle, waiting for a call
for heat.
2. Valve-On Delay (Prepurge): The igniter and
motor are on while the control delays turning on
the oil solenoid valve for the programmed time.
3. Trial for Ignition: The fuel valve is opened. A
flame should be established within the factory
set trial for ignition time (“lockout time”).
4. Lockout: The control has shut the burner down
for one of the following safety reasons:
• The trial for ignition (lockout) time expires
without flame being established.
• The cad cell detects flame during Valve-On
Delay.
• The Recycle mode 30-second time budget
expires (see “Recycle” section for complete
explanation of recycle time budget).
If the control locks out three times without
completing a successful call for heat, the control
enters Restricted (Hard) Lockout, and must be reset
by a technician. Hold the reset button for 15
seconds until the red light shuts off to reset from
Restricted Lockout.
5. Ignition Carryover: Once flame is established,
the igniter remains on for 10 additional seconds
to ensure flame stability.
6. Run: The flame is sustained until the call for
heat is satisfied. The burner is then sent to
Motor-Off Delay (Postpurge), if applicable, or it
is shut down and sent to Standby.
7. Recycle: If the flame is lost while the burner is
firing, the control shuts down the burner, enters
a 60-second recycle delay and then repeats the
ignition sequence. The control will continue to
Recycle each time the flame is lost until the
accumulated oil-flow-without-flame time
reaches 30 seconds, at which point the control
will go into lockout. This feature prevents
excessive accumulation of oil in the appliance
firing chamber.
8. Motor-Off Delay: If applicable, the fuel valve is
closed and the control delays turning the motor
off for the set motor-off delay time before the
control returns to standby.
9. Pump Prime: The igniter and motor are on with
the oil valve open for up to 4 minutes. During
Pump Prime mode, the cad cell is disregarded,
allowing the technician to prime the pump
without having to jumper the cad cell.
RESET BUTTON OPERATION
• Table A explains what action the control
will take when the reset button is pressed for
different lengths of time during the various
burner operating states.